Sawing machine



,Mgy 11 1926. 3 L. T.'FONDA SAWING MACHINE Filed Dec 11. 1922 I'henarhays Patented May 11, 1926.

PATENT FF IQE LESTER T. FONDA, OF AIVEES, IOWA.

sAw Ne MACHINE.

Applicationfiled December 11, .1922. serial No. 6065166.

The object of my invention is to provide an improved saw mechanism ofsimple, durable and inexpensive construction .so or ranged andconstructed that it adapted to perform :1 number of different lcmdsotsow work.

More specifically it is the object of my invention to provide a sawmechanism capable of being easily and quickly-adapted to various kindsof saw work, such as cross cut ting, ripping and mitering.

These and other objects will be apparent to those skilled in the art.

lh'ly invention consists in the construction, arrangement andcombination of the various parts of the device, wherebytheobjectscontemplated are attained, as hereinafter more fully setforth, pointed out in my claims, and illustrated in the accompanyingdrawings, in which:

.l igure 1 is a plan view of my improved saw.

l igure 2 is a sectional view taken on the line 22 of Figure 1.

Figure 3 a transverse, sectional view taken on the line 33 of Figure 2.

My improved device comprises a frame having legs 10 and a table 11 onthe top end of said legs. Near the lower'end of the legs 10 l haveprovided a platform 12 which is provided with a comparatively .large ciiculztr opening 13. The said platformhas in its upper face near the edgeof the opening 13, a ball race 14 designed to carry a number of ball be:sings 15.

Mounted on the balls 15 I have provided a circular platform 16 which isprovidedwith a downwardly extending portion 17 de signed to enter theopening 13, and a flanged portion 18 designed to rest onthe balls 15.The circumferential.edge of the flange 18 is provided with a series ofteeth 19.

Arranged vertically in one side of the frame I have provided a shaft 20,the lower end of which is provided with a pinion 21 designed to meshwith the teeth 19 of the platform 16. The upper end of the shaft 20 ismounted in the table 11. The said table is provided with a recess 22 toreceive a gear 23 on the upper end of the shaft 20. The shaft '20 isalso provided with a beveled gear 24 in mesh with the beveled pinion 25,said pinion being mounted on a horizontally or 'a-nged shaft 26, theouter end of which is provided with a hand wheel 27. The shaft 26 .isllllOlllltECl in a bearing 28 secured to the lower face of the table 11.The table 11 isprovided with a circular opening 28 into which extendsthe circular flange 29. Said opening 28 being arranged vertically abovetheopening 13.

Rotativoly and slidebly mounted on the flange 29 I have provided acircular plate 30 which is preferably formed of comparatively soft metalsuch as aluminum whilethe'table 11 maybe formed of. cast iron or steel.The plate 30 is provided through its central portion with a slot 31 inwhich is mounted a wooden frame. 32. The saidfrsme 32 is provided withaslot 33 which is for the purpose of receiving the saw hereinafter to bemen tioned.

The circumferential edge of the plateBOis formed with a groove 34 whichis designed toreceivc a numbercf pins 35 for the pur pose of retainingthe platewithin the opening 28. These pins are inserted in the side ofthe table 11 insuch a manner that they may be removed-at anytimedesired.

The circularedge of the plate 30 is also provided with a seriesv ofteeth 36 designed to mesh withthe gear 23.

Secured to the central. portion ofthe circular platform .16 arebearingsupports 37 in whichis mounted a shaft 38. The said shaft 38 has securedto it a frame 39 which is provided withuprights 40, the upper end ofsaid uprights being provided withsupporting members 41, said membershaving mounted thereon a shaft 42 by means of suitable bearings.

'lheshaft 42 is provided to carry a circularsaw 43 and abelt wheel 44.The saw 43 isso locatedthat it will operate in the slot of the plateBO.The frame 39being pivotally mounted is free to swing in such amanner-thatthe saw 43 may be moved from one end of the slot/33 to theopposite end, and also so arranged that the saw will disappear below thesurface of the plate 30 when in one position of its movement, as shownin dotted lines.

The frame 39 has mounted on it a motor 45 carrying a belt wheel 46 whichis in alinement with the belt wheel 44, the last two wheels beingdesigned to carry a belt 47.

By this arrangement it will be seen that I have provided means wherebythe saw 43 may be constantly driven regardless of whatever position thesame may be, in.

Secured to the back side'of the frame member ll 1 have provided a spring48, one end of which is connected to the circular platform 16 at 49.This spring tends to normally hold the frame 39 in the position shown indotted lines.

At the forward end of the frame ll I have provided a smaller spring 50which is for the purpose of balancing the weight of the frame 39.

For positively limiting the backward movement of the upper end of theframe 39 I have provided a link 39 having one end pivoted at 39 and theopposite end provided with a slot 39 which isdesigned to receive a pin89 secured in the frame member %0. The said link 89 limits the movementof the frame backwards when the pin 39 engages the upper end of the slot89 Secured to the frame 89 l have provided an outwardly extending arm51, the outer end of which is provided with a hinge 53 to which a pedalportion 52 is secured. The said hinge is so located that the pedal 52may be swung upwardly and inwardly to such position that when the frame39 is rotated, as hereinafter to be described, the pedal will not engagethe posts 10.

Secured to the top of the table 11 I have provided the usual guideplates 5% which are adjustably mounted by means of thumb screws 55.

By the arrangement just described, it will be seen that the plate 30 andthe circular platform 16 are both rotatively mounted and are designed tooperate in unison by being connected to the pinion gears 23 and 21 onthe shaft 20.

Thus it will be seen that the operator may grasp the handle 27 androtate the shaft 26, and that the plate 30 and the platform 16 will berotated in unison. the frame 39 to also be rotated so that the saw 13 isalways in alinement with the slot 33.

By this arrangement the be brought into position face of the guideplates 5% or transversely therewith, and at any immediate angles betweenthe two positions so that the saw may be used either a cross cutting ora ripping saw, and whenever desired, as a miter saw.

The saw is brought into operative position by the operator placing hisfoot on the pedal 52 which will swing the upper end of saw blade d3 mayThis will cause parallel with the the frame upwardly, carrying with itthe saw 43. The circular plate 16 may be formed of comparatively heavymaterial so as to reduce the vibration of the saw as it is beingoperated.

Thus it will be seen that I have provided a universal saw mechanism ofsimple, durable and inexpensive construction, which is adapted toperform a large variety of operations.

1 claim as my invention:

1. In a device of the class described, a supporting frame having a topmember and a bottom member, each of said members being provided with acircular. opening, a saw table rotatively mounted in the opening in thetop member, a saw platform rotatively mounted in the opening of saidbottom memher, said saw table and said circular platform each beingprovided with an annular rack, a pinion for each of said rac (S, a vertically arranged shaft for carrying and connecting both of said pinionsto provide means whereby said saw table and said supporting table may berotated in unison, and means for imparting rotary movement to saidvertical shaft.

2. In a device of the class described, a supporting frame havinghorizontal top and bottom members, each of said membersbeing providedwith a circular opening, a saw table rotatively mounted in the openingof said top member, said saw table being provided with a saw slot, guidemembers carried by said top member, a circular platform rotativelymounted in the opening of said bottom member, a saw frame pivotallymounted on said circular platform to swing in a vertical plane, a sawcarried by the free end of said platform adapted to swing into and outof position in the saw slot of said saw table, each of said platformsbeing provided with an annular rack bar, a pinion for each of said rackbars, a vertical shaft for operatively connecting said pinions toprovide means whereby the said circular platform and said saw table maybe rotated in unison so that the saw will always be kept in alinementwith the slot in said saw table and to provide means whereby the saw maybe rotated at various angles relative to said guides, and means forrotating said vertical shaft.

Des Moines, Iowa, December 5, 1922.

' LESTER T. FONDA.

